[T106][ZXW-22]7520V3SCV2.01.01.02P42U09_VEC_V0.8_AP_VEC origin source commit
Change-Id: Ic6e05d89ecd62fc34f82b23dcf306c93764aec4b
diff --git a/ap/os/linux/linux-3.4.x/drivers/mfd/88pm860x-i2c.c b/ap/os/linux/linux-3.4.x/drivers/mfd/88pm860x-i2c.c
new file mode 100644
index 0000000..b2cfdc4
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/drivers/mfd/88pm860x-i2c.c
@@ -0,0 +1,390 @@
+/*
+ * I2C driver for Marvell 88PM860x
+ *
+ * Copyright (C) 2009 Marvell International Ltd.
+ * Haojian Zhuang <haojian.zhuang@marvell.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/i2c.h>
+#include <linux/err.h>
+#include <linux/regmap.h>
+#include <linux/mfd/88pm860x.h>
+#include <linux/slab.h>
+
+int pm860x_reg_read(struct i2c_client *i2c, int reg)
+{
+ struct pm860x_chip *chip = i2c_get_clientdata(i2c);
+ struct regmap *map = (i2c == chip->client) ? chip->regmap
+ : chip->regmap_companion;
+ unsigned int data;
+ int ret;
+
+ ret = regmap_read(map, reg, &data);
+ if (ret < 0)
+ return ret;
+ else
+ return (int)data;
+}
+EXPORT_SYMBOL(pm860x_reg_read);
+
+int pm860x_reg_write(struct i2c_client *i2c, int reg,
+ unsigned char data)
+{
+ struct pm860x_chip *chip = i2c_get_clientdata(i2c);
+ struct regmap *map = (i2c == chip->client) ? chip->regmap
+ : chip->regmap_companion;
+ int ret;
+
+ ret = regmap_write(map, reg, data);
+ return ret;
+}
+EXPORT_SYMBOL(pm860x_reg_write);
+
+int pm860x_bulk_read(struct i2c_client *i2c, int reg,
+ int count, unsigned char *buf)
+{
+ struct pm860x_chip *chip = i2c_get_clientdata(i2c);
+ struct regmap *map = (i2c == chip->client) ? chip->regmap
+ : chip->regmap_companion;
+ int ret;
+
+ ret = regmap_raw_read(map, reg, buf, count);
+ return ret;
+}
+EXPORT_SYMBOL(pm860x_bulk_read);
+
+int pm860x_bulk_write(struct i2c_client *i2c, int reg,
+ int count, unsigned char *buf)
+{
+ struct pm860x_chip *chip = i2c_get_clientdata(i2c);
+ struct regmap *map = (i2c == chip->client) ? chip->regmap
+ : chip->regmap_companion;
+ int ret;
+
+ ret = regmap_raw_write(map, reg, buf, count);
+ return ret;
+}
+EXPORT_SYMBOL(pm860x_bulk_write);
+
+int pm860x_set_bits(struct i2c_client *i2c, int reg,
+ unsigned char mask, unsigned char data)
+{
+ struct pm860x_chip *chip = i2c_get_clientdata(i2c);
+ struct regmap *map = (i2c == chip->client) ? chip->regmap
+ : chip->regmap_companion;
+ int ret;
+
+ ret = regmap_update_bits(map, reg, mask, data);
+ return ret;
+}
+EXPORT_SYMBOL(pm860x_set_bits);
+
+static int read_device(struct i2c_client *i2c, int reg,
+ int bytes, void *dest)
+{
+ unsigned char msgbuf0[I2C_SMBUS_BLOCK_MAX + 3];
+ unsigned char msgbuf1[I2C_SMBUS_BLOCK_MAX + 2];
+ struct i2c_adapter *adap = i2c->adapter;
+ struct i2c_msg msg[2] = {{i2c->addr, 0, 1, msgbuf0},
+ {i2c->addr, I2C_M_RD, 0, msgbuf1},
+ };
+ int num = 1, ret = 0;
+
+ if (dest == NULL)
+ return -EINVAL;
+ msgbuf0[0] = (unsigned char)reg; /* command */
+ msg[1].len = bytes;
+
+ /* if data needs to read back, num should be 2 */
+ if (bytes > 0)
+ num = 2;
+ ret = adap->algo->master_xfer(adap, msg, num);
+ memcpy(dest, msgbuf1, bytes);
+ if (ret < 0)
+ return ret;
+ return 0;
+}
+
+static int write_device(struct i2c_client *i2c, int reg,
+ int bytes, void *src)
+{
+ unsigned char buf[bytes + 1];
+ struct i2c_adapter *adap = i2c->adapter;
+ struct i2c_msg msg;
+ int ret;
+
+ buf[0] = (unsigned char)reg;
+ memcpy(&buf[1], src, bytes);
+ msg.addr = i2c->addr;
+ msg.flags = 0;
+ msg.len = bytes + 1;
+ msg.buf = buf;
+
+ ret = adap->algo->master_xfer(adap, &msg, 1);
+ if (ret < 0)
+ return ret;
+ return 0;
+}
+
+int pm860x_page_reg_read(struct i2c_client *i2c, int reg)
+{
+ unsigned char zero = 0;
+ unsigned char data;
+ int ret;
+
+ i2c_lock_adapter(i2c->adapter);
+ read_device(i2c, 0xFA, 0, &zero);
+ read_device(i2c, 0xFB, 0, &zero);
+ read_device(i2c, 0xFF, 0, &zero);
+ ret = read_device(i2c, reg, 1, &data);
+ if (ret >= 0)
+ ret = (int)data;
+ read_device(i2c, 0xFE, 0, &zero);
+ read_device(i2c, 0xFC, 0, &zero);
+ i2c_unlock_adapter(i2c->adapter);
+ return ret;
+}
+EXPORT_SYMBOL(pm860x_page_reg_read);
+
+int pm860x_page_reg_write(struct i2c_client *i2c, int reg,
+ unsigned char data)
+{
+ unsigned char zero;
+ int ret;
+
+ i2c_lock_adapter(i2c->adapter);
+ read_device(i2c, 0xFA, 0, &zero);
+ read_device(i2c, 0xFB, 0, &zero);
+ read_device(i2c, 0xFF, 0, &zero);
+ ret = write_device(i2c, reg, 1, &data);
+ read_device(i2c, 0xFE, 0, &zero);
+ read_device(i2c, 0xFC, 0, &zero);
+ i2c_unlock_adapter(i2c->adapter);
+ return ret;
+}
+EXPORT_SYMBOL(pm860x_page_reg_write);
+
+int pm860x_page_bulk_read(struct i2c_client *i2c, int reg,
+ int count, unsigned char *buf)
+{
+ unsigned char zero = 0;
+ int ret;
+
+ i2c_lock_adapter(i2c->adapter);
+ read_device(i2c, 0xfa, 0, &zero);
+ read_device(i2c, 0xfb, 0, &zero);
+ read_device(i2c, 0xff, 0, &zero);
+ ret = read_device(i2c, reg, count, buf);
+ read_device(i2c, 0xFE, 0, &zero);
+ read_device(i2c, 0xFC, 0, &zero);
+ i2c_unlock_adapter(i2c->adapter);
+ return ret;
+}
+EXPORT_SYMBOL(pm860x_page_bulk_read);
+
+int pm860x_page_bulk_write(struct i2c_client *i2c, int reg,
+ int count, unsigned char *buf)
+{
+ unsigned char zero = 0;
+ int ret;
+
+ i2c_lock_adapter(i2c->adapter);
+ read_device(i2c, 0xFA, 0, &zero);
+ read_device(i2c, 0xFB, 0, &zero);
+ read_device(i2c, 0xFF, 0, &zero);
+ ret = write_device(i2c, reg, count, buf);
+ read_device(i2c, 0xFE, 0, &zero);
+ read_device(i2c, 0xFC, 0, &zero);
+ i2c_unlock_adapter(i2c->adapter);
+ i2c_unlock_adapter(i2c->adapter);
+ return ret;
+}
+EXPORT_SYMBOL(pm860x_page_bulk_write);
+
+int pm860x_page_set_bits(struct i2c_client *i2c, int reg,
+ unsigned char mask, unsigned char data)
+{
+ unsigned char zero;
+ unsigned char value;
+ int ret;
+
+ i2c_lock_adapter(i2c->adapter);
+ read_device(i2c, 0xFA, 0, &zero);
+ read_device(i2c, 0xFB, 0, &zero);
+ read_device(i2c, 0xFF, 0, &zero);
+ ret = read_device(i2c, reg, 1, &value);
+ if (ret < 0)
+ goto out;
+ value &= ~mask;
+ value |= data;
+ ret = write_device(i2c, reg, 1, &value);
+out:
+ read_device(i2c, 0xFE, 0, &zero);
+ read_device(i2c, 0xFC, 0, &zero);
+ i2c_unlock_adapter(i2c->adapter);
+ return ret;
+}
+EXPORT_SYMBOL(pm860x_page_set_bits);
+
+static const struct i2c_device_id pm860x_id_table[] = {
+ { "88PM860x", 0 },
+ {}
+};
+MODULE_DEVICE_TABLE(i2c, pm860x_id_table);
+
+static int verify_addr(struct i2c_client *i2c)
+{
+ unsigned short addr_8607[] = {0x30, 0x34};
+ unsigned short addr_8606[] = {0x10, 0x11};
+ int size, i;
+
+ if (i2c == NULL)
+ return 0;
+ size = ARRAY_SIZE(addr_8606);
+ for (i = 0; i < size; i++) {
+ if (i2c->addr == *(addr_8606 + i))
+ return CHIP_PM8606;
+ }
+ size = ARRAY_SIZE(addr_8607);
+ for (i = 0; i < size; i++) {
+ if (i2c->addr == *(addr_8607 + i))
+ return CHIP_PM8607;
+ }
+ return 0;
+}
+
+static struct regmap_config pm860x_regmap_config = {
+ .reg_bits = 8,
+ .val_bits = 8,
+};
+
+static int __devinit pm860x_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ struct pm860x_platform_data *pdata = client->dev.platform_data;
+ struct pm860x_chip *chip;
+ int ret;
+
+ if (!pdata) {
+ pr_info("No platform data in %s!\n", __func__);
+ return -EINVAL;
+ }
+
+ chip = kzalloc(sizeof(struct pm860x_chip), GFP_KERNEL);
+ if (chip == NULL)
+ return -ENOMEM;
+
+ chip->id = verify_addr(client);
+ chip->regmap = regmap_init_i2c(client, &pm860x_regmap_config);
+ if (IS_ERR(chip->regmap)) {
+ ret = PTR_ERR(chip->regmap);
+ dev_err(&client->dev, "Failed to allocate register map: %d\n",
+ ret);
+ kfree(chip);
+ return ret;
+ }
+ chip->client = client;
+ i2c_set_clientdata(client, chip);
+ chip->dev = &client->dev;
+ dev_set_drvdata(chip->dev, chip);
+
+ /*
+ * Both client and companion client shares same platform driver.
+ * Driver distinguishes them by pdata->companion_addr.
+ * pdata->companion_addr is only assigned if companion chip exists.
+ * At the same time, the companion_addr shouldn't equal to client
+ * address.
+ */
+ if (pdata->companion_addr && (pdata->companion_addr != client->addr)) {
+ chip->companion_addr = pdata->companion_addr;
+ chip->companion = i2c_new_dummy(chip->client->adapter,
+ chip->companion_addr);
+ chip->regmap_companion = regmap_init_i2c(chip->companion,
+ &pm860x_regmap_config);
+ if (IS_ERR(chip->regmap_companion)) {
+ ret = PTR_ERR(chip->regmap_companion);
+ dev_err(&chip->companion->dev,
+ "Failed to allocate register map: %d\n", ret);
+ return ret;
+ }
+ i2c_set_clientdata(chip->companion, chip);
+ }
+
+ pm860x_device_init(chip, pdata);
+ return 0;
+}
+
+static int __devexit pm860x_remove(struct i2c_client *client)
+{
+ struct pm860x_chip *chip = i2c_get_clientdata(client);
+
+ pm860x_device_exit(chip);
+ if (chip->companion) {
+ regmap_exit(chip->regmap_companion);
+ i2c_unregister_device(chip->companion);
+ }
+ regmap_exit(chip->regmap);
+ kfree(chip);
+ return 0;
+}
+
+#ifdef CONFIG_PM_SLEEP
+static int pm860x_suspend(struct device *dev)
+{
+ struct i2c_client *client = container_of(dev, struct i2c_client, dev);
+ struct pm860x_chip *chip = i2c_get_clientdata(client);
+
+ if (device_may_wakeup(dev) && chip->wakeup_flag)
+ enable_irq_wake(chip->core_irq);
+ return 0;
+}
+
+static int pm860x_resume(struct device *dev)
+{
+ struct i2c_client *client = container_of(dev, struct i2c_client, dev);
+ struct pm860x_chip *chip = i2c_get_clientdata(client);
+
+ if (device_may_wakeup(dev) && chip->wakeup_flag)
+ disable_irq_wake(chip->core_irq);
+ return 0;
+}
+#endif
+
+static SIMPLE_DEV_PM_OPS(pm860x_pm_ops, pm860x_suspend, pm860x_resume);
+
+static struct i2c_driver pm860x_driver = {
+ .driver = {
+ .name = "88PM860x",
+ .owner = THIS_MODULE,
+ .pm = &pm860x_pm_ops,
+ },
+ .probe = pm860x_probe,
+ .remove = __devexit_p(pm860x_remove),
+ .id_table = pm860x_id_table,
+};
+
+static int __init pm860x_i2c_init(void)
+{
+ int ret;
+ ret = i2c_add_driver(&pm860x_driver);
+ if (ret != 0)
+ pr_err("Failed to register 88PM860x I2C driver: %d\n", ret);
+ return ret;
+}
+subsys_initcall(pm860x_i2c_init);
+
+static void __exit pm860x_i2c_exit(void)
+{
+ i2c_del_driver(&pm860x_driver);
+}
+module_exit(pm860x_i2c_exit);
+
+MODULE_DESCRIPTION("I2C Driver for Marvell 88PM860x");
+MODULE_AUTHOR("Haojian Zhuang <haojian.zhuang@marvell.com>");
+MODULE_LICENSE("GPL");